I'm 6'5", and I have a problem finding decent t-shirts for an undershirt to concealed carry. I saw these 5.11 shirts and read a review which seemed to state that it went 9" or so under the belt, which I would hope would be enough for me, but wanted to know if anyone has had experience with this type of problem. I normally wear Tall, but that only goes to my belt-line. Xtra-tall goes about 3" below my beltline, which is acceptable, but I'd prefer 5" for my tuckable holster. Thanks for the help!